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Area Forecast Discussion
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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171 FXUS62 KJAX 150614 AFDJAX Area Forecast Discussion National Weather Service Jacksonville FL 214 AM EDT Mon Jul 15 2024 ...New AVIATION... .UPDATE... Issued at 735 PM EDT Sun Jul 14 2024 For the latest NE FL and SE GA Daily Key Messages please visit: https://www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf Convection is waning across the region with mostly isolated showers north of I-10 and west of highway 301, and will diminish as the evening progresses. The current forecast has this well in hand. The overnight lows will in the mid to upper 70s, with mins near 80 on the First Coach Beaches tomorrow morning. The region will be between high pressure to the east, and a trough just to the northwest Monday. This pattern will yield a moist and unstable south southwest flow, with convection in the afternoon and early evening hours. Temperatures will trend above normal Monday. Heat indices may be in range of advisory levels again on Monday afternoon with values between 104 to 109 degrees. && .NEAR TERM... Issued at 201 PM EDT Sun Jul 14 2024 For the latest NE FL and SE GA Daily Key Messages please visit: https://www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf East coast sea breeze is pinned close to the Atlantic coast and with a synoptic westerly flow will only make slow progress inland. Convection is beginning to fire near the Intracoastal waterway and again will more slowly inland. The Gulf sea breeze is making a bit more progress inland and should enhance the squeezing over the Florida Peninsula this afternoon and eventually across inland SE Georgia this evening. Highest chances of precipitation will be over the Ocala/Ocala National forest areas northward into Gainesville. Convection will gradually begin to diminish after sunset, end last over the central Florida peninsula and Marion County. Highs will be in the upper 90s with Heat Index values in the 104-107F range inland and with higher relative humidity along the coast 107-110F. Thus will maintain the Heat Advisory along the coast into the evening. && .SHORT TERM... (Monday through Tuesday night) Issued at 201 PM EDT Sun Jul 14 2024 The region will be between high pressure to the east, and a trough just to the northwest this period. This pattern will yield a moist and unstable south southwest flow, with convection in the afternoon and evening hours. Temperatures will trend above normal. Heat indices may be in range of advisory levels again on Monday. && .LONG TERM... (Wednesday through next Sunday) Issued at 201 PM EDT Sun Jul 14 2024 High pressure will be centered to the east through Friday, as a persistent trough lingers to the northwest. This pattern will yield a south southwest flow. This flow will yield a moist and unstable airmass, with diurnal convection expected. Convection will initiate on the Gulf sea breeze, then spread across the area through the afternoon hours. Temperatures will trend a little above normal. The high will build more toward the east northeast on over the weekend. With this pattern the flow will be more from the south. This will produce diurnal convection, with temperatures running a little above normal. && .AVIATION...(06Z TAFS) Issued at 212 AM EDT Mon Jul 15 2024 Steady VFR conditions through the period outside of convective influences. Scattered t`storms will develop along a pinned sea breeze early this afternoon. Convection may initiate as early as 16z, but impacts to terminals along the I-95 corridor are more likely between 19z-22z. Concerns with convection will be downburst/outflow winds and occasional visibility restriction due to downpours. Light southwest winds prevail at inland sites through the day. The easterly (Atlantic) sea breeze around 6-10 kts will push into the KSSI/KSGJ/KCRG terminals early this afternoon but will stall around I-95. && .MARINE... Issued at 201 PM EDT Sun Jul 14 2024 The Bermuda-Azores High axis will be centered across the central Florida peninsula with a synoptic southwesterly to westerly flow pattern through mid-week. The flow pattern will be broken during the late afternoon and evening hours with a southerly to southeasterly flow as the sea breeze develops. Nocturnal wind surges around the western periphery of the ridge could briefly reach Small Craft Exercise Caution (SCEC) criteria during the overnight hours but again only for a short period. Isolated convection during the daylight hours with widely scattered nocturnal convection. Rip Currents: Will maintain a moderate risk of rip currents through tomorrow at area beaches. && .PRELIMINARY POINT TEMPS/POPS... AMG 96 75 96 75 / 60 20 60 20 SSI 93 79 93 80 / 40 30 50 30 JAX 95 76 96 76 / 60 20 60 20 SGJ 94 76 94 77 / 50 20 50 20 GNV 93 74 94 74 / 80 10 60 20 OCF 93 75 95 75 / 80 20 70 30 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AM...None. && $$